whatthebluck's thread

const SessionFromHeaders = S.transformOrFail(
  AuthenticatedHeaders,
  UserSession,
  (b) =>
    Cookie.parse(b.Cookie).pipe(
      Effect.flatMap(ReadonlyRecord.get(SESSION_COOKIE)),
      Effect.flatMap(UserSession.fromString),
      Effect.catchTags({
        ParseError: (error) => Effect.fail(error.error),
        NoSuchElementException: (error) => Effect.fail(ParseResult.type(S.string.ast, b, error.message)),
      }),
    ),
  (a) => ParseResult.fail(ParseResult.forbidden(UserSession.ast, a, "Cannot encode headers from a session")),
);